diff options
| -rw-r--r-- | drivers/usb/host/xhci-mem.c | 94 | ||||
| -rw-r--r-- | drivers/usb/host/xhci-ring.c | 4 | ||||
| -rw-r--r-- | drivers/usb/host/xhci.h | 16 |
3 files changed, 72 insertions, 42 deletions
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index 824651cf02ad..5bee81a5be49 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -357,7 +357,7 @@ static int xhci_alloc_segments_for_ring(struct xhci_hcd *xhci, * Set the end flag and the cycle toggle bit on the last segment. * See section 4.9.1 and figures 15 and 16. */ -static struct xhci_ring *xhci_ring_alloc(struct xhci_hcd *xhci, +struct xhci_ring *xhci_ring_alloc(struct xhci_hcd *xhci, unsigned int num_segs, unsigned int cycle_state, enum xhci_ring_type type, unsigned int max_packet, gfp_t flags) { @@ -454,7 +454,7 @@ int xhci_ring_expansion(struct xhci_hcd *xhci, struct xhci_ring *ring, return 0; } -static struct xhci_container_ctx *xhci_alloc_container_ctx(struct xhci_hcd *xhci, +struct xhci_container_ctx *xhci_alloc_container_ctx(struct xhci_hcd *xhci, int type, gfp_t flags) { struct xhci_container_ctx *ctx; @@ -479,7 +479,7 @@ static struct xhci_container_ctx *xhci_alloc_container_ctx(struct xhci_hcd *xhci return ctx; } -static void xhci_free_container_ctx(struct xhci_hcd *xhci, +void xhci_free_container_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx) { if (!ctx) @@ -1757,21 +1757,61 @@ void xhci_free_command(struct xhci_hcd *xhci, kfree(command); } +int xhci_alloc_erst(struct xhci_hcd *xhci, + struct xhci_ring *evt_ring, + struct xhci_erst *erst, + gfp_t flags) +{ + size_t size; + unsigned int val; + struct xhci_segment *seg; + struct xhci_erst_entry *entry; + + size = sizeof(struct xhci_erst_entry) * evt_ring->num_segs; + erst->entries = dma_alloc_coherent(xhci_to_hcd(xhci)->self.sysdev, + size, + &erst->erst_dma_addr, + flags); + if (!erst->entries) + return -ENOMEM; + + memset(erst->entries, 0, size); + erst->num_entries = evt_ring->num_segs; + + seg = evt_ring->first_seg; + for (val = 0; val < evt_ring->num_segs; val++) { + entry = &erst->entries[val]; + entry->seg_addr = cpu_to_le64(seg->dma); + entry->seg_size = cpu_to_le32(TRBS_PER_SEGMENT); + entry->rsvd = 0; + seg = seg->next; + } + + return 0; +} + +void xhci_free_erst(struct xhci_hcd *xhci, struct xhci_erst *erst) +{ + size_t size; + struct device *dev = xhci_to_hcd(xhci)->self.sysdev; + + size = sizeof(struct xhci_erst_entry) * (erst->num_entries); + if (erst->entries) + dma_free_coherent(dev, size, + erst->entries, + erst->erst_dma_addr); + erst->entries = NULL; +} + void xhci_mem_cleanup(struct xhci_hcd *xhci) { struct device *dev = xhci_to_hcd(xhci)->self.sysdev; - int size; int i, j, num_ports; cancel_delayed_work_sync(&xhci->cmd_timer); - /* Free the Event Ring Segment Table and the actual Event Ring */ - size = sizeof(struct xhci_erst_entry)*(xhci->erst.num_entries); - if (xhci->erst.entries) - dma_free_coherent(dev, size, - xhci->erst.entries, xhci->erst.erst_dma_addr); - xhci->erst.entries = NULL; - xhci_dbg_trace(xhci, trace_xhci_dbg_init, "Freed ERST"); + xhci_free_erst(xhci, &xhci->erst); + if (xhci->event_ring) xhci_ring_free(xhci, xhci->event_ring); xhci->event_ring = NULL; @@ -2308,9 +2348,8 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags) struct device *dev = xhci_to_hcd(xhci)->self.sysdev; unsigned int val, val2; u64 val_64; - struct xhci_segment *seg; - u32 page_size, temp; - int i; + u32 page_size, temp; + int i, ret; INIT_LIST_HEAD(&xhci->cmd_list); @@ -2449,32 +2488,9 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags) if (xhci_check_trb_in_td_math(xhci) < 0) goto fail; - xhci->erst.entries = dma_alloc_coherent(dev, - sizeof(struct xhci_erst_entry) * ERST_NUM_SEGS, &dma, - flags); - if (!xhci->erst.entries) + ret = xhci_alloc_erst(xhci, xhci->event_ring, &xhci->erst, flags); + if (ret) goto fail; - xhci_dbg_trace(xhci, trace_xhci_dbg_init, - "// Allocated event ring segment table at 0x%llx", - (unsigned long long)dma); - - memset(xhci->erst.entries, 0, sizeof(struct xhci_erst_entry)*ERST_NUM_SEGS); - xhci->erst.num_entries = ERST_NUM_SEGS; - xhci->erst.erst_dma_addr = dma; - xhci_dbg_trace(xhci, trace_xhci_dbg_init, - "Set ERST to 0; private num segs = %i, virt addr = %p, dma addr = 0x%llx", - xhci->erst.num_entries, - xhci->erst.entries, - (unsigned long long)xhci->erst.erst_dma_addr); - - /* set ring base address and size for each segment table entry */ - for (val = 0, seg = xhci->event_ring->first_seg; val < ERST_NUM_SEGS; val++) { - struct xhci_erst_entry *entry = &xhci->erst.entries[val]; - entry->seg_addr = cpu_to_le64(seg->dma); - entry->seg_size = cpu_to_le32(TRBS_PER_SEGMENT); - entry->rsvd = 0; - seg = seg->next; - } /* set ERST count with the number of entries in the segment table */ val = readl(&xhci->ir_set->erst_size); diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index e56f1ce27e4e..c629a0b77dc5 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -153,7 +153,7 @@ static void next_trb(struct xhci_hcd *xhci, * See Cycle bit rules. SW is the consumer for the event ring only. * Don't make a ring full of link TRBs. That would be dumb and this would loop. */ -static void inc_deq(struct xhci_hcd *xhci, struct xhci_ring *ring) +void inc_deq(struct xhci_hcd *xhci, struct xhci_ring *ring) { /* event ring doesn't have link trbs, check for last trb */ if (ring->type == TYPE_EVENT) { @@ -2957,7 +2957,7 @@ static int prepare_transfer(struct xhci_hcd *xhci, return 0; } -static unsigned int count_trbs(u64 addr, u64 len) +unsigned int count_trbs(u64 addr, u64 len) { unsigned int num_trbs; diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index e78a20aec8be..f1515500ed88 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1965,9 +1965,17 @@ void xhci_slot_copy(struct xhci_hcd *xhci, int xhci_endpoint_init(struct xhci_hcd *xhci, struct xhci_virt_device *virt_dev, struct usb_device *udev, struct usb_host_endpoint *ep, gfp_t mem_flags); +struct xhci_ring *xhci_ring_alloc(struct xhci_hcd *xhci, + unsigned int num_segs, unsigned int cycle_state, + enum xhci_ring_type type, unsigned int max_packet, gfp_t flags); void xhci_ring_free(struct xhci_hcd *xhci, struct xhci_ring *ring); int xhci_ring_expansion(struct xhci_hcd *xhci, struct xhci_ring *ring, - unsigned int num_trbs, gfp_t flags); + unsigned int num_trbs, gfp_t flags); +int xhci_alloc_erst(struct xhci_hcd *xhci, + struct xhci_ring *evt_ring, + struct xhci_erst *erst, + gfp_t flags); +void xhci_free_erst(struct xhci_hcd *xhci, struct xhci_erst *erst); void xhci_free_endpoint_ring(struct xhci_hcd *xhci, struct xhci_virt_device *virt_dev, unsigned int ep_index); @@ -1998,6 +2006,10 @@ struct xhci_command *xhci_alloc_command_with_ctx(struct xhci_hcd *xhci, void xhci_urb_free_priv(struct urb_priv *urb_priv); void xhci_free_command(struct xhci_hcd *xhci, struct xhci_command *command); +struct xhci_container_ctx *xhci_alloc_container_ctx(struct xhci_hcd *xhci, + int type, gfp_t flags); +void xhci_free_container_ctx(struct xhci_hcd *xhci, + struct xhci_container_ctx *ctx); /* xHCI host controller glue */ typedef void (*xhci_get_quirks_t)(struct device *, struct xhci_hcd *); @@ -2071,6 +2083,8 @@ void xhci_handle_command_timeout(struct work_struct *work); void xhci_ring_ep_doorbell(struct xhci_hcd *xhci, unsigned int slot_id, unsigned int ep_index, unsigned int stream_id); void xhci_cleanup_command_queue(struct xhci_hcd *xhci); +void inc_deq(struct xhci_hcd *xhci, struct xhci_ring *ring); +unsigned int count_trbs(u64 addr, u64 len); /* xHCI roothub code */ void xhci_set_link_state(struct xhci_hcd *xhci, __le32 __iomem **port_array, |